package Filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 处理所有请求与响应的字符转换
 */
@WebFilter("/CharacterFilter")
public class CharacterFilter implements Filter {
	//private String encoding;
	
	public void destroy() {
		
	}

	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;
        
    	response.setCharacterEncoding("UTF-8");
    	request.setCharacterEncoding("UTF-8");
    	response.setContentType("text/html;charset=UTF-8");
    	chain.doFilter(request, response);
    }

	public void init(FilterConfig fConfig) throws ServletException {
		//this.encoding = fConfig.getInitParameter("encoding");
	}

}
